Work: Photoelectricity Battery capacity:500mAh(Chargeable lithium battery) Project Type: Ergonomics Optical Mouse Resolution: 1600dpi Operation Mode:-electronic Rated voltage / current: 5V / 30mA Power Type:Rechargeable(Charging time 2h,Working time 150h) Type:2.4Ghz Wireless Blueteeth mouse System requirements:for 98/Me/2000/XP/Vista/Win 7/Win8/10/Vista OS or latest. Installation and use steps: 1. Remove the wireless mouse from . 2. Remove the mini receiver installed in the bottom of the mouse, insert the computer's USB interface,free code, plug and play. 3. This product is a built-in lithium battery. You only need to set the bottom switch to the ON position. A charging cable is included in the package. When the cursor movement delay occurs, please insert the charging cable into the front end interface of the mouse to charge. Please try not to use it while charging! Colour:White Material:ABS Package Contents: 1 * Wireless Mouse Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.